DOCUMENT:Q232606 08-DEC-2000 [exchange] TITLE :XADM: Changing the Port Used by the Directory for LDAP over SSL PRODUCT :Microsoft Exchange PROD/VER::5.5 OPER/SYS: KEYWORDS:exc55 EXC55SP3Fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SYMPTOMS ======== When Exchange Server is installed on a Windows 2000 domain controller, the Exchange Server directory service has no way to use a non-default port (636) for Lightweight Directory Access Protocol (LDAP) Secure Sockets Layer (SSL) communication. In the event log the following error may be found: Event ID: 1309 Type: Error Source: MSExchangeDS Description: Register LDAP SSL protocol failed with error 10048. The LDAP SSL server is not available. Make sure port number 636 is not in use by another application. CAUSE ===== This issue occurs when Exchange Server is running on a system that already has a Directory service using this port and when Exchange Server is installed on a Windows 2000 domain controller. RESOLUTION ========== If you set the Incoming-Msg-Size-Limit attribute to, for example 637, using the Exchange Server Administrator program in raw mode, you can effectively change the port used by the Exchange Server LDAP SSL service for listening. To do so: WARNING: Using the raw mode of the Exchange Server Administrator program (admin /r) incorrectly can cause serious problems that may require you to reinstall Microsoft Windows NT Server and/or Microsoft Exchange Server. Microsoft cannot guarantee that problems resulting from the incorrect use of raw mode can be solved. Use raw mode at your own risk. Install the latest service pack for Exchange 5.5 1. Start the Microsoft Exchange Server Administrator program in raw mode by typing the following at a command prompt: "c:\exchsrvr\bin\admin /r" (without the quotation marks) 2. Select the Protocols container of the Site or Server which depends on the scope of this setting. 3. Select the LDAP component. 4. On the File menu, click Raw Properties. 5. In the List Attributes of the Type drop-down box, select All. 6. In the Object Attributes list, scroll down to, and select the Incoming-Msg-Size-Limit attribute. 7. In the Edit Value text box, type the port you want to use. 8. Click Set and make sure the Edit Value and Attribute Value are the same. 9. Click OK to close the dialog box. 10. Stop and restart the Exchange Server Directory service. STATUS ====== Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3. MORE INFORMATION ================ To resolve this issue, obtain the latest service pack for Exchange Server version 5.5. For additional information, please see the following article in the Microsoft Knowledge Base: Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack Component: Directory File name Version Dsamain.exe 5.5.2617.0 Additional query words: ====================================================================== Keywords : exc55 EXC55SP3Fix Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2 Version : :5.5 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.